ff20775d18
* Remove legacy r8a7779 SoC code * Remove legacy marzen board code -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVvwN/AAoJENfPZGlqN0++xRUP/1lVK2q2ixR2B/7jqPyvcrai 6RwXT99cwGSpUe7X7AcpWRW39EhRmt89ZPlQvkLF/Ylx9+XUBG3lsyIoaa40YW6x mNvbiKTJCFILh7K4YshibFtJPzj7sL+Vhy8xV6zVIBn5oA9rSBfEteTUt5JWik0b 2QZYZix8STU52k/djQ4vUbAwJfFNwmO4PDqY9B/XXE5a9ETUeEPecBB94xaJCyv+ ULFmPEHxfvdUug2tLJUTazdtDgQlxRczZ7vYMKpmUeQTPTvx/2L3scz36JpjTFx9 +U1KSPUzUKwonhS9/TEAeqbU1hDkOvIx7d9lJgd2zxnMrwCyTuJuvmaFV8dZlftu 8v5cTbdr8InLVdqDM4GzjrL5RhPl1F3MYtfUdT50duzcRTiwyOkKCbjQakV2rgKZ aQp4RdDxl1DBlqxyYW16o9Q5figecfqsxzNvAmveM+GOA19a2h9hLNTotZUvDGCC AXFrdXMCwzxpIy/LeWcIDs5ycHE0hrD1y68vH4vJp3pWr+dJ0p+QUgjtK5poXvLe 9RJnYtqJ0cXaYZj0DR64X3TUB2VpCbnK2pNv1/O1TJysiRUGlffRohaGv/UC5am2 y/kRYOX3qay0a60wWkGQzm/cMB4Zg8fa0ktXj5W/PIhGBLYXTPIQHkSfdFjpkyR6 WVXodsZdANGIlwQSCeLa =VPyl -----END PGP SIGNATURE----- Merge tag 'renesas-marzen-board-removal-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/cleanup Renesas ARM Based SoC Marzen Board Removal for v4.3 * Remove legacy r8a7779 SoC code * Remove legacy marzen board code * tag 'renesas-marzen-board-removal-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: r8a7779: Remove legacy SoC code ARM: shmobile: marzen: Remove legacy board code ARM: shmobile: r8a7779: Cleanup header file ARM: shmobile: marzen-reference: Remove C board code ARM: shmobile: r8a7779: Generic SMP ops ARM: shmobile: r8a7779: Generic CCF and timer support Signed-off-by: Olof Johansson <olof@lixom.net>
128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/*
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* SMP support for R-Mobile / SH-Mobile - r8a7779 portion
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*
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* Copyright (C) 2011 Renesas Solutions Corp.
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* Copyright (C) 2011 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/smp.h>
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#include <linux/spinlock.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <asm/cacheflush.h>
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#include <asm/smp_plat.h>
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#include <asm/smp_scu.h>
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#include "common.h"
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#include "pm-rcar.h"
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#include "r8a7779.h"
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#define AVECR IOMEM(0xfe700040)
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#define R8A7779_SCU_BASE 0xf0000000
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static const struct rcar_sysc_ch r8a7779_ch_cpu1 = {
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.chan_offs = 0x40, /* PWRSR0 .. PWRER0 */
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.chan_bit = 1, /* ARM1 */
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.isr_bit = 1, /* ARM1 */
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};
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static const struct rcar_sysc_ch r8a7779_ch_cpu2 = {
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.chan_offs = 0x40, /* PWRSR0 .. PWRER0 */
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.chan_bit = 2, /* ARM2 */
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.isr_bit = 2, /* ARM2 */
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};
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static const struct rcar_sysc_ch r8a7779_ch_cpu3 = {
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.chan_offs = 0x40, /* PWRSR0 .. PWRER0 */
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.chan_bit = 3, /* ARM3 */
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.isr_bit = 3, /* ARM3 */
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};
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static const struct rcar_sysc_ch * const r8a7779_ch_cpu[4] = {
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[1] = &r8a7779_ch_cpu1,
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[2] = &r8a7779_ch_cpu2,
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[3] = &r8a7779_ch_cpu3,
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};
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static int r8a7779_platform_cpu_kill(unsigned int cpu)
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{
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const struct rcar_sysc_ch *ch = NULL;
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int ret = -EIO;
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cpu = cpu_logical_map(cpu);
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if (cpu < ARRAY_SIZE(r8a7779_ch_cpu))
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ch = r8a7779_ch_cpu[cpu];
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if (ch)
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ret = rcar_sysc_power_down(ch);
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return ret ? ret : 1;
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}
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static int r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle)
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{
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const struct rcar_sysc_ch *ch = NULL;
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unsigned int lcpu = cpu_logical_map(cpu);
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int ret;
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if (lcpu < ARRAY_SIZE(r8a7779_ch_cpu))
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ch = r8a7779_ch_cpu[lcpu];
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if (ch)
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ret = rcar_sysc_power_up(ch);
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else
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ret = -EIO;
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return ret;
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}
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static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
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{
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/* Map the reset vector (in headsmp-scu.S, headsmp.S) */
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__raw_writel(__pa(shmobile_boot_vector), AVECR);
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shmobile_boot_fn = virt_to_phys(shmobile_boot_scu);
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shmobile_boot_arg = (unsigned long)shmobile_scu_base;
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/* setup r8a7779 specific SCU bits */
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shmobile_scu_base = IOMEM(R8A7779_SCU_BASE);
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shmobile_smp_scu_prepare_cpus(max_cpus);
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r8a7779_pm_init();
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/* power off secondary CPUs */
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r8a7779_platform_cpu_kill(1);
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r8a7779_platform_cpu_kill(2);
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r8a7779_platform_cpu_kill(3);
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}
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#ifdef CONFIG_HOTPLUG_CPU
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static int r8a7779_cpu_kill(unsigned int cpu)
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{
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if (shmobile_smp_scu_cpu_kill(cpu))
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return r8a7779_platform_cpu_kill(cpu);
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return 0;
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}
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#endif /* CONFIG_HOTPLUG_CPU */
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struct smp_operations r8a7779_smp_ops __initdata = {
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.smp_prepare_cpus = r8a7779_smp_prepare_cpus,
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.smp_boot_secondary = r8a7779_boot_secondary,
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#ifdef CONFIG_HOTPLUG_CPU
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.cpu_die = shmobile_smp_scu_cpu_die,
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.cpu_kill = r8a7779_cpu_kill,
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#endif
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};
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